● Underwater Luring Lamp & Fish Gathering Light
Underwater luring lamp may be regulated as a fishing tool depending on the area.
Please follow the rules of the local area.
For Japan, please refer to the Fisheries Agency website.
http://www.jfa.maff.go.jp/j/yugyo/y_kisei/kisoku/todo_huken/
■ Flashing Light of 8Hz Cycle

■ Parts Name and The Position of Battery Insertion

■ Lithium Pin battery (Model No.: BR311/2B)

When replacing the batteries, purchase this battery pack.
Kawahagi (Filefish) Gathering Light
With ready-to-use batteries
Model No.: YF-337B-R (Red) YF-337B-G (Green) |
Operated with Lithium Pin battery BR311 x 2pcs |
Improved Kawahagi gathering light with renewal package!
The gathering light using LED is the first in the industry!
- Added a rubber to be able to adjust the beads' movement.
- The flashing light of 8Hz cycle has high luring effect.
- The light is scattered by beads and appeals widely.
- Water resistance of 300m
- Two colors of Red and Green are available according to the area and circumstances.
- 【Battery】Lithium Pin battery BR311 x 2pcs
- (batteries included)
- 【Light Source】YF-337B-R:Red Chip LED x 2pcs
- YF-337B-G:Green Chip LED x 2pcs
- 【Operated Temperature】0 ~ 40℃
- 【Battery Life at 20℃】Approx. 8 hours continuously
- 【Dimensions】Body:Approx. 20mm(D)x27.5mm(L)
- Full Length:Approx. 170mm
- 【Weight】Approx. 6.4g
- (included batteries and all parts)

YF-500 | YF-501 |
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LED Underwater Luring Lamp
Model No.: YF-501 | Operated with Alkaline battery LR20 (D) x 4pcs Battery sold separately |
Improved Points from Existing Model
YF-500:
Adopting chip LED,
- 500lm, double brightness compared with YF-500.
- Uniform light that doesn't stimulate vigilant fish.
Common Features with Existing Model
YF-500:
- The wavelength of blue-green 500nm attracts lots of fish.
- 1/f fluctuation of light encourages fish's feed behavior.
- Can see underwater view very clearly with white LED.
Please use Alkaline battery. If use Zinc Carbon battery or Rechargeable battery, the lamp doesn't sink and needs external weight over 80号 (300g).
- 【Battery Life at 20℃】with Alkaline batteries
- Full lighting mode(ON):Approx. 8 hours continuously
- Fluctuation mode(AUTO):Approx. 32 hours continuously
- 【Light Source】White LED x 8, Blue-green x 12
- 【Dimensions】Approx. Diameter 123mm × Height
- 300mm
- 【Weight】Approx. 1.6㎏ included Alkaline batteries
- 【Accessory】30m rope, Rope winding holder x 1pc, Poly-pouch x 1pc
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Many kinds of fish react with 500nm (blue-green). | |
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Target fish is gathering in dark area aiming small fishes. Throwing the lure to the border line between light and dark, the possibility of fish pick up will raise up. |
Image of YF-501 usage | |
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■It also can be used as lantern on land and at the time of emergency |
CF of Hapyson LED underwater luring lamp in Japanese

Replacement Reflection Sheet
for Octopus Gathering Light
Model No.: YF-338-S | Replacement Reflection Sheet |
This replacement sheet is only for Octopus gathering light YF-338.
Color fading or torn-off may occur due to rub against the bottom of the ocean and contact with octopus.
It's recommended to replace the reflectiion sheet to keep the high performance.

Octopus Gathering Light
Model No.: YF-338 | Operated with Panasonic Lithium battery BR425 x 2pcs Battery sold separately |
Catch octopus with LED light!
Flashing with 8Hz cycle appeals intensely to Octopus!
- Sunlight and light of the LED reflect diffusely to the reflection sheet attracts octopus.
- Included one replacement reflection sheet and easy to replace.
- 【Battery Life】 Approx. 16hours continuously
- 【Light Source】 Red flash LED
- 【Dimensions】 Approx.Ф23×230mm
- 【Weight】 Approx.12g included BR425 batteries
- 【Water Pressure】 Water depth approx. 100m
- 【Accessory】 Extra reflection sheet x 1pc

Fish Gathering Light Mini
- Flashing Type
Model No.: YF-8921 (Green) YF-8922 (Red) |
Operated with Hapyson Lithium battery battery BR311 x 1pc Battery included |
- The smallest LED fish gathering light in the world.
- Green/Red lights attract lots of fish!
- Easy to put on.
- 【Battery Life】 Approx. 15 hours continuously
- 【Light Source】 Green High Bright LED
- 【Dimensions】 Approx. φ6.0×37mm
- 【Weight】 Approx. 1g included BR311 battery
- 【Water Pressure】 Water depth approx. 300m
- 【Accessory】 Tube cover x 1pc, One-touch holder x 1pc

LED Underwater Luring Lamp Mini

Model No.: YF-510 | Operated with Alkaline battery LR6 (AA) x 3pcs Battery sold separately |
Small and lightweight. Ideal for Run & Gun fishing like Ajing or Egi (squid lure) fishing!
- Mobility up with compact and lightweight design.
- The wavelength of blue-green 500nm attracts lots of fish.
- 1/f fluctuation of light encourages fish's feed behavior.
- 【Battery Life at 20℃】 with Alkaline batteries
- Full lighting mode: Approx. 8 hours continuously
- Fluctuation mode: Approx. 30 hours continuously
- White lighting mode: Approx. 25 hours continuously
- 【Light Source】 White LED×3, Green & Blue LED×6
- 【Dimensions】 Approx.φ62 X 164 mm
- 【Weight】 Approx. 440g included Alkaline batteries
- 【Accessory】 10m rope, Pouch x 1pc
PV of Hapyson LED underwater luring lamp mini YF-510 in Japanese

LED Underwater Luring Lamp

Model No.: YF-500 | Operated with Alkaline battery LR20 (D) x 4pcs Battery sold separately |
New LED Underwater Luring Lamp which gather fish and encourages fish's feed behavior.
Added AUTO mode functionn with 1/f fluctuation.
Attracting bait with white LED, 500nm LED (blue-green) and 1/f fluctuation encourage fish's feed behavior.
- Can see underwater view very clearly with white LED.
Target Fish: Hairtail, Horse Mackerel, Squid, Mackerel, Rockfish, Sayori
Please use Alkaline battery. If use Zinc Carbon battery or Rechargeable battery, the lamp doesn't sink and needs external weight over 80号 (300g).
- 【Battery Life】 with Alkaline batteries
- Full lighting mode(ON):Approx. 10 hours continuously
- Fluctuation mode(AUTO):Approx. 40 hours continuously
- 【Light Source】 White LED×8, Green & Blue LED×12
- 【Dimensions】 Approx.φ123 x 300 mm
- 【Weight】 Approx. 1.6kg included Alkaline batteries
- 【Accessory】 30m Rope, Rope Holder x 1pc
PV of Hapyson LED underwater luring lamp YF-500 in Japanese
*Recommend primary batteries for the appliances which have the function of drip proof, water proof, or underwater. When use rechargeable batteries, please note the following points.
・Do not use different types or used and new of batteries together.
・Remove the batteries from the appliance after use.
・Charge the batteries fully before use.
Otherwise, gas may be generated and cause damage to the applicance.

Fish Gathering Light Mini
Model No.: YF-8911(Green) |
Operated with Hapyson Lithium batterey BR311 x 1pc Battery included |
- The smallest LED fish gathering light in the world.
- 【Battery Life】 Approx. 15 hours continuously
- 【Light Source】 Green High Bright LED
- 【Dimensions】 Approx.φ6.0×37mm
- 【Weight】 Approx.1g Included BR311 battery
- 【Water Pressure】 Water depth approx. 300m
- 【Accessory】 Tube cover x 1pc

Fish Gathering Light (Flashing Type)
Model No.: YF-8901(Red) YF-8901T-G(Green) |
Operated with Panasonic Lithium battery BR425 x 1pc Battery sold separately |
Target fish: Hairtail, Squid, Eel
- 【Battery Life】 Approx. 15 hours continuously
- 【Light Source】 Red flash LED, Green flash LED
- 【Dimensions】 Approx.φ9×80mm
- 【Weight】 Approx.3g included BR425 battery
- 【Water Pressure】 Water depth approx. 300m
※Fish gathering lights* cannot be repaired.
* Model No.: YF-338, YF-8921, YF-8922, YF-337-R/G, YF-8911, YF-8901T-R/G